Record Information
Version1.0
Creation date2015-10-09 22:29:02 UTC
Update date2017-01-19 02:36:15 UTC
FoodComEx IDPC000170
FoodDB RecordFDB011841
Chemical Information
NameL-Citrulline
DescriptionOccurs in the juice of watermelon (Citrullus vulgaris) A non-essential amino acid and a precursor of arginine. Citrulline supplements have been claimed to promote energy levels, stimulate the immune system and help detoxify ammonia (a cell toxin). L-citrulline is made from L-ornithine and carbamoyl phosphate in one of the central reactions in the urea cycle. It is also produced from L-arginine as a by-product of the reaction catalyzed by the enzyme NO synthase. L-citrulline, while being an amino acid, is not involved in protein synthesis and is not one of the amino acids coded for by DNA. Although citrulline cannot be incorporated in proteins during protein synthesis, several proteins are known to contain citrulline as an amino acid. These citrulline residues are generated by a family of enzymes called peptidylarginine deiminases (PADs), which convert the amino acid arginine into citrulline. Proteins that contain citrulline residues include myelin basic protein (MBP), fillagrin and several histone proteins.; Citrulline is an amino acid made from ornithine and carbamoyl phosphate in one of the central reactions in the urea cycle. It is also produced from arginine as a by-product of the reaction catalyzed by NOS family (NOS; Citrulline is made from ornithine and carbamoyl phosphate in one of the central reactions in the urea cycle. It is also produced from arginine as a by-product of the reaction catalyzed by NOS family (NOS; EC 1.14.13.39). Arginine is first oxidized into N-hydroxyl-arginine, which is then further oxidized to citrulline concomitant with release of nitric oxide.; EC 1.14.13.39). Citrulline's name is derived from citrullus, the Latin word for watermelon, from which it was first isolated.; EC 1.14.13.39). In this reaction arginine is first oxidized into N-hydroxyl-arginine, which is then further oxidized to citrulline concomitant with the release of nitric oxide.; The organic compound citrulline is an ?-amino acid. Its name is derived from citrullus, the Latin word for watermelon, from which it was first isolated in 1930. It has the idealized formula H2NC(O)NH(CH2)3CH(NH2)CO2H. It is a key intermediate in the urea cycle, the pathway by which mammals excrete ammonia.; The rind of watermelon (Citrullus lanatus) is a good natural source of citrulline. L-Citrulline is found in many foods, some of which are mung bean, cucurbita (gourd), nectarine, and acorn.
CAS Number372-75-8
Structure
Thumb
Synonyms
SynonymSource
(2S)-2-amino-5-(carbamoylamino)pentanoatebiospider
(2S)-2-amino-5-(carbamoylamino)pentanoic acidbiospider
(S)-2-amino-5-(aminocarbonyl)aminopentanoatebiospider
(S)-2-amino-5-(aminocarbonyl)aminopentanoic acidbiospider
(S)-2-Amino-5-ureidopentanoatebiospider
(S)-2-Amino-5-ureidopentanoic acidbiospider
2-Amino-5-uredovaleratebiospider
2-amino-5-Uredovaleric acidHMDB
2-Amino-5-ureidovaleratebiospider
2-Amino-5-ureidovaleric acidbiospider
A-amino-d-ureidovaleratebiospider
A-amino-d-ureidovaleric acidbiospider
a-amino-delta-UreidovalerateGenerator
a-amino-delta-Ureidovaleric acidGenerator
a-amino-δ-ureidovalerateGenerator
a-amino-δ-ureidovaleric acidGenerator
Alpha-amino-delta-ureidovaleratebiospider
Alpha-amino-delta-ureidovaleric acidbiospider
Alpha-amino-gamma-ureidovaleratebiospider
Alpha-amino-gamma-ureidovaleric acidbiospider
Amino-ureidovaleratebiospider
Amino-ureidovaleric acidbiospider
CIRbiospider
CitChEBI
CITRULLINEChEBI
Citrulline, l-biospider
Citrulline; L-formdb_source
Cytrullinebiospider
D-ureidonorvalinebiospider
Delta-ureidonorvalinebiospider
DL-CitrullineHMDB
Gammaureidonorvalinebiospider
H-cit-ohbiospider
L-2-Amino-5-ureido-valeratebiospider
L-2-Amino-5-ureido-valeric acidbiospider
L-2-Amino-5-ureidovaleratebiospider
L-2-Amino-5-ureidovaleric acidbiospider
L-citrulline (DCF)biospider
L-CytrullineHMDB
L-N5-carbamoyl-Ornithinebiospider
L(+)-2-Amino-5-ureidovaleratebiospider
L(+)-2-Amino-5-ureidovaleric acidbiospider
L(+)-citrullinebiospider
N-carbamylornithinebiospider
N()-CarbamylornithineHMDB
N(5)-(Aminocarbonyl)-DL-ornithineHMDB
N(5)-(aminocarbonyl)-L-ornithinebiospider
N(5)-carbamoyl-L-ornithinebiospider
N(delta)-carbamylornithinebiospider
N(δ)-carbamylornithineGenerator
N<SUP>5</SUP>-(aminocarbonyl)ornithinebiospider
N5-(Aminocarbonyl)-L-ornithinebiospider
N5-(aminocarbonyl)-Ornithinebiospider
N5-(Aminocarbonyl)ornithinebiospider
N5-Carbamoyl-L-ornithineHMDB
N5-carbamoylornithinebiospider
N5-carbamylornithinebiospider
ND-carbamylornithinebiospider
Ndelta-carbamy-ornithinebiospider
Ndelta-carbamylornithinebiospider
Ngamma-carbamylornithinebiospider
Ornithine, N5-(aminocarbonyl)-biospider
Ornithine, N5-carbamoyl-, L- (8CI)biospider
SitrullineHMDB
Ureidonorvalinebiospider
Ureidovaleratebiospider
Ureidovaleric acidbiospider
α-amino-δ-ureidovalerateGenerator
α-amino-δ-ureidovaleric acidGenerator
δ-ureidonorvalineGenerator
Chemical FormulaC6H13N3O3
IUPAC name(2S)-2-amino-5-(carbamoylamino)pentanoic acid
InChI IdentifierInChI=1S/C6H13N3O3/c7-4(5(10)11)2-1-3-9-6(8)12/h4H,1-3,7H2,(H,10,11)(H3,8,9,12)
InChI KeyRHGKLRLOHDJJDR-UHFFFAOYSA-N
Isomeric SMILESNC(CCCNC(O)=N)C(O)=O
Average Molecular Weight175.1857
Monoisotopic Molecular Weight175.095691297
Chemical Taxonomy
Description Belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentL-alpha-amino acids
Alternative Parents
Substituents
  • L-alpha-amino acid
  • Fatty acid
  • Isourea
  • Amino acid
  • Carboximidic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Carboximidamide
  • Amine
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Primary aliphatic amine
  • Organopnictogen compound
  • Imine
  • Organic oxygen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physico-Chemical Properties - Experimental
PropertyValueReference
Experimental logP-3.19SANGSTER (1994)
Experimental Water SolubilityNot Available
Melting PointMp 222°DFC
Foods of Origin
FoodContent Range AverageReference
FoodReference
Production Data
Production Methodcommercial
Production Method ReferenceNot Available
Production Method Reference FileNot Available
Quantity AvailableProduction upon request, up to 3 g
Delivery TimeNot Available
Storage Formsolid
Storage Conditions-80°C
StabilityNot Available
PurityNot Available
Spectra
Spectral Data Upon RequestNot Available
Provider Information
Contact NameContact InstitutionContact Email
Rosa Vazquez Fresnovazquezf@ualberta.ca
Commercial Vendors
AKSci F663
AKSci J90777
Glentham GM7920
MetaSci HMDB0000904
Sigma-Aldrich HMDB0000904
Toronto Research Chemicals C535700